- dst_uri buffer overflow check, discovered in openser (the fix is slightly different due to slight changes in the append_branch function) Note: this is not such a big problem as it might sound, the only module using append_branch() with a non zero dst_uri is registrar and in this case it sets dst_uri to the received address which is always < 1024 (so it's always safe).

- Support for force_send_socket in the destination set. That allows to specify the outbound socket for every branch when doing parallel forking. - Modules aligned to new prototypes of append_branch and next_branch functions.